Typical operating characteristics – Rainbow Electronics MAX829 User Manual
Page 3
MAX828/MAX829
Switched-Capacitor Voltage Inverters
_______________________________________________________________________________________
3
40
0
1.5
2.5
OUTPUT RESISTANCE
vs. SUPPLY VOLTAGE
5
10
35
MAX828/829-01
SUPPLY VOLTAGE (V)
OUTPUT RESISTANCE (
Ω
)
3.5
5.5
4.5
30
20
25
15
MAX829
MAX828
50
10
OUTPUT RESISTANCE
vs. TEMPERATURE
15
40
45
MAX828/829-02
TEMPERATURE (°C)
OUTPUT RESISTANCE (
Ω
)
35
30
25
20
V
IN
= 3.3V
V
IN
= 5.0V
V
IN
= 1.5V
-40
-20
0
60
20
40
80
45
0
0
10
5
15
35 40
MAX828
OUTPUT CURRENT vs. CAPACITANCE
5
35
40
MAX828/829-03
CAPACITANCE (
µF)
OUTPUT CURRENT (mA)
20 25 30
45 50
30
25
20
15
10
V
IN
= 3.15V, V
OUT
= -2.5V
V
IN
= 1.9V, V
OUT
= -1.5V
V
IN
= 4.75V, V
OUT
= -4.0V
45
0
0
5
20
25
MAX829
OUTPUT CURRENT vs. CAPACITANCE
5
35
40
MAX828/829-04
CAPACITANCE (
µF)
OUTPUT CURRENT (mA)
15
10
30
30
25
20
15
10
V
IN
= 3.15V, V- = -2.5V
V
IN
= 1.9V, V- = -1.5V
V
IN
= 4.75V, V- = -4.0V
200
0
1.5
2.5
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
25
50
175
MAX828/829-07
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (
µ
A)
3.5
5.5
4.5
150
100
125
75
MAX829
MAX828
500
450
0
0
5
20
25
MAX828
OUTPUT VOLTAGE RIPPLE
vs. CAPACITANCE
50
350
400
MAX828/829-05
CAPACITANCE (
µF)
OUTPUT VOLTAGE RIPPLE (mVp-p)
15
10
30
300
250
200
150
100
V
IN
= 4.75V, V
OUT
= -4.0V
V
IN
= 3.15V, V
OUT
= -2.5V
V
IN
= 1.9V, V
OUT
= -1.5V
450
0
0
5
20
25
MAX829
OUTPUT VOLTAGE RIPPLE
vs. CAPACITANCE
50
350
400
MAX828/829-06
CAPACITANCE (
µF)
OUTPUT VOLTAGE RIPPLE (mVp-p)
15
10
30
300
250
200
150
100
V
IN
= 4.75V, V
OUT
= -4.0V
V
IN
= 3.15V, V
OUT
= -2.5V
V
IN
= 1.9V, V
OUT
= -1.5V
60
55
45
35
25
15
10
-40
-20
0
60
MAX828
PUMP FREQUENCY vs. TEMPERATURE
20
50
MAX828/829-08
TEMPERATURE (°C)
PUMP FREQUENCY (kHz)
20
40
80
40
30
V
IN
= 3.3V
V
IN
= 5.0V
V
IN
= 1.5V
__________________________________________Typical Operating Characteristics
(Circuit of Figure 1, V
IN
= +5V, C1 = C2 = C3, T
A
= +25°C, unless otherwise noted.)
55
30
MAX829
PUMP FREQUENCY vs. TEMPERATURE
35
50
MAX828/829-9
TEMPERATURE (°C)
PUMP FREQUENCY (kHz)
45
40
V
IN
= 3.3V
V
IN
= 5.0V
V
IN
= 1.5V
-40
-20
0
60
20
40
80